Fracture mechanics-based dangerous rock collapse early warning method and system
A fracture mechanics and early warning system technology, applied in complex mathematical operations, using optical devices, instruments, etc., can solve problems such as inability to accurately reflect the nature of dangerous rock collapse, time-consuming, etc., to support accurate and fast transmission, less time-consuming, and improved The effect of accuracy
Active Publication Date: 2021-06-22
CHONGQING JIAOTONG UNIVERSITY
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However, these methods all rely on video sequence images, and need to compare the images at the current moment and the previous moment to identify characteristic parameters, such as the displacement of key points of dangerous rocks, the deformation of dangerous rock masses, etc.; it is time-consuming and cannot accurately respond The nature of rock avalanches
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[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0031] A method for early warning of dangerous rock collapse based on fracture mechanics, comprising the following steps:
[0032] Real-time acquisition of fracture monitoring images of dangerous rocks, including fracture opening monitoring images and fracture depth monitoring images. Crack Shape Reference figure 1 As shown, the whole is V-shaped, with an open end and a closed end, the open end splits the rock mass, and the closed end keeps the rock mass connected.
[0033] According to the crack opening monitoring image and the crack depth monitoring image, respectively extract the crack opening of dangerous rock and the crack depth of dangerous rock; crack opening refers to the width of the crack on the crack opening end face; The distance to the closed end face of the crack;
[0034] Calculate the COD criterion of fracture mech...
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The invention discloses a dangerous rock collapse early warning method and system based on fracture mechanics, and the method comprises the steps: respectively extracting the fracture opening degree and the fracture depth of a dangerous rock according to a fracture opening degree monitoring image and a fracture depth monitoring image, and calculating a fracture mechanics COD criterion, and comparing the crack opening displacement delta with a crack opening displacement critical value delta c, and if delta is greater than or equal to delta c, indicating that the crack is to be expanded and the dangerous rock has a fracture risk, and sending dangerous rock collapse early warning information. A dangerous rock collapse early warning system based on fracture mechanics comprises a data acquisition system used for acquiring crack monitoring images in real time, and the data acquisition system remotely transmits the crack monitoring images to a remote monitoring center through a data transmission device; and an image processing program and a collapse early warning program are configured in the remote monitoring center. Starting from the essence of dangerous rock formation and development, the technical problem of how to improve the accuracy and real-time performance of dangerous rock collapse early warning is solved.
Description
technical field [0001] The invention relates to the technical field of dangerous rock collapse warning technology. Background technique [0002] Due to geological conditions in Southwest China, geological disasters such as dangerous rock collapses occur frequently. Dangerous rock collapse is one of the most common geological disasters. Due to its strong suddenness, wide distribution, strong disaster-causing ability and certain concealment, it often causes great harm to transportation facilities, towns and mining areas. , but also seriously threaten the safety of people's lives and property. There are many dangerous rocks in Southwest China. How to choose economical, safe and reasonable monitoring devices to monitor dangerous rocks in real time and give timely warnings, so that the collapse of dangerous rocks can be scientifically prevented, so as to ensure the safety and smoothness of transportation facilities, and protect the lives and property of the people from threaten...
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IPC IPC(8): G06F17/10G06K9/60G01B11/02G01B11/22
CPCG06F17/10G01B11/02G01B11/22G06V10/20
Inventor 王林峰唐宁张继旭程平
Owner CHONGQING JIAOTONG UNIVERSITY